CVE-2025-71320 json
picklescan - Remote Code Execution via Incomplete Disallowed Inputs
published 10mo ago modified yesterday also EUVD-2025-210267 , GHSA-84r2-jw7c-4r5q , PYSEC-2026-1785
- cvss
- 9.8
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
picklescan before 0.0.33 contains an incomplete deny-list that fails to block pydoc.locate and operator.methodcaller functions, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle files using these unblocked functions to achieve arbitrary code execution when the pickle is deserialized.
Patch / fix
- pypi picklescan 0.0.33
- picklescan picklescan 0.0.33
Is CVE-2025-71320 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 4mo ago
Exploit prediction
0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- github.com https://github.com/mmaitre314/picklescan/security/advisories/GHSA-84r2-jw7c-4r5q referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| CNA | 4.0 | 9.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| pypi | picklescan | <0.0.33 |
0.0.33 |
Affected products
- picklescan picklescan
Classification
- Weakness
-
- CWE-184 Incomplete List of Disallowed Inputs
References
-
github.com
/mmaitre314/picklescan/pull/53
web
-
github.com
/mmaitre314/picklescan/commit/70c1c6c31beb6baaf52c8db1b6c3c0e84a6f9dab
web
-
github.com
/mmaitre314/picklescan/security/advisories/GHSA-84r2-jw7c-4r5q
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/picklescan-remote-code-execution-via-incomplete-disallowed-inputs
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2025-71320
advisory
-
github.com
/mmaitre314/picklescan
package
-
github.com
/mmaitre314/picklescan/releases/tag/v0.0.33
web
-
pypi.org
/project/picklescan
package
-
github.com
/advisories/GHSA-84r2-jw7c-4r5q
advisory
Sources
- CVE List CVE-2025-71320
- GitHub Advisory GHSA-84r2-jw7c-4r5q
- NVD CVE-2025-71320
- OSV PYSEC-2026-1785
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.